The gospel story is not about you being worthy, it is about God and his glory. It tells us that God saved you when you were thoroughly unworthy. There is far more joy in being loved than feeling yourself to be worthy. The cross does not exist to attest to how valuable you are, but how loved you are. The gospel is about the glory of God, the most magnificent thing in all the universe. The gospel is about how God has glorified his name by inviting you into that glory. Take hold of this truth, repent and believe, and give God all the glory.